Yes, Hungarys Ratka Rhyolite can be used in a bathroom. Rhyolite is a type of volcanic rock known for its durability and resistance to water, making it suitable for various applications, including bathroom walls, floors, countertops, and shower backsplashes. Its natural beauty and unique textures can add a stylish and contemporary look to a bathroom design while providing durability and functionality. However, its always recommended to consult with a professional or supplier to ensure its suitability for specific bathroom uses and to understand any required sealing or maintenance processes.